Product Overview
Tungsten bars are solid cylindrical metal components manufactured from high-purity tungsten or tungsten-based alloys through powder metallurgy, pressing, sintering, or forging processes.
Technical Specifications (Typical Values)
|
Parameter |
Typical Value |
Description |
|
Chemical Purity |
≥99.95% (some products ≥99.90%) |
Pure tungsten bars; alloy bars maintain >99% tungsten content |
|
Melting Point |
3420-3422°C |
Exceptional high-temperature resistance |
|
Density |
19.3 g·cm⁻³ (some alloys ≈17.5 g·cm⁻³) |
Approximately 1.7× denser than lead |
|
Thermal Expansion Coefficient |
4.3 × 10⁻⁶ °C⁻¹ (20-400°C) |
Low expansion, dimensional stability |
|
Thermal Conductivity |
300 W·m⁻¹·K⁻¹ (pure tungsten) |
Excellent heat dissipation |
|
Electrical Resistivity |
0.054 Ω·mm²·m⁻¹ (20°C) |
Low resistance, suitable for electrodes and conductive components |
|
Hardness |
~1500 HV (pure tungsten) |
High hardness, red hardness, wear and corrosion resistance |
|
Tensile Strength |
~550 MPa (pure tungsten) |
High strength, impact resistance |
|
Yield Strength |
~350 MPa |
Critical for shape retention |
|
Elastic Modulus |
≈400 GPa |
High rigidity for heavy-load applications |
*Note: Values represent common specifications (Ø1-100 mm, custom lengths); actual parameters may vary with purity, heat treatment, and alloying elements.*
Chemical Composition & Alloy Types
|
Type |
Primary Composition |
Typical Applications |
|
Pure Tungsten Bars |
W ≥99.90% (impurities ≤0.1%) |
Filaments, vacuum electronic devices, ion implantation, welding electrodes |
|
W-Cu Alloy Bars |
W + Cu (10%-30%) |
High thermal/electrical conductivity components, heat sinks, electronic packaging |
|
W-Ni/Fe Alloy Bars |
W + Ni/Fe (5%-15%) |
High-strength structural components, wear-resistant parts |
|
W-Mo/W-Re Alloy Bars |
W + Mo/Re (2%-30%) |
High-temperature strength, creep resistance for aerospace and nuclear industries |
|
Cemented Tungsten Bars (WC-Co) |
WC + Co (5%-12%) |
Cutting tools, drill bits, wear-resistant components |
Alloying enhances toughness and electrical/thermal conductivity while maintaining high density for diverse industrial requirements.
Mechanical Properties & Processability
High Hardness & Brittleness: Pure tungsten exhibits high hardness with crack susceptibility; alloying (e.g., W-Cu, W-Ni) significantly improves toughness and machinability
Tensile/Compressive Strength: Maintains >500 MPa tensile strength at elevated temperatures, suitable for high-pressure environments
Wear & Corrosion Resistance: Excellent durability in acids, alkalis, salt spray, and other corrosive media with extended service life
Processing Methods: Forging, turning, grinding, hot isostatic pressing, precision sintering; surfaces available as-forged (black) or ground (silver-gray)
Key Advantages
Extremely High Melting Point (>3400°C) maintains structural integrity in extreme temperatures
High Density (≈19.3 g·cm⁻³) enables counterweight and radiation shielding applications
Low Thermal Expansion Coefficient ensures minimal dimensional changes for precision instruments
Excellent Thermal/Electrical Conductivity provides effective heat dissipation and current conduction at high temperatures
Corrosion & Radiation Resistance ensures stability in strong acids/alkalis and radioactive environments
Tailorable Properties through alloying (conductivity, thermal performance, magnetic properties) for multifunctional requirements
Applications
|
Industry |
Key Applications |
Value Proposition |
|
Electronics/Semiconductors |
Filaments, vacuum tubes, ion implantation support wires, sputtering targets, IC heat sinks |
High melting point, low vapor pressure, excellent thermal conductivity |
|
Aerospace |
Counterweights, engine nozzles, rocket thrusters, structural components |
High density, temperature resistance, corrosion resistance |
|
Medical |
Radiation shielding, X-ray tube cathodes, nuclear medicine equipment |
High density, radiation resistance, chemical inertness |
|
Welding/Metallurgy |
TIG welding, resistance welding electrodes, glass melting furnace electrodes |
High melting point, low vapor pressure, corrosion resistance |
|
High-Temperature Furnaces/Heat Treatment |
Heating elements, quartz furnace rods, hot isostatic pressing molds |
High-temperature strength, red hardness |
|
Automotive |
High-temperature valves, engine components, wear-resistant bushings |
High strength, wear resistance, corrosion resistance |
|
Tools/Molds |
High-speed cutting tools, drill bits, cemented carbide molds |
High hardness, red hardness, wear resistance |
|
Defense/Special Applications |
Armor-piercing cores, counterweight munitions, radar antenna supports |
High density, mechanical strength, impact resistance |
Specifications, Standards & Selection Guidelines
|
Specification |
Typical Dimensions |
Surface Treatment |
Applicable Standards |
|
Round Bars |
Ø1-100 mm, Length 10-3000 mm (customizable) |
Ground, as-forged, sandblasted |
GB/T 4187-2017 (pure tungsten bars) |
|
Alloy Bars |
Ø1-60 mm |
Ground, turned |
GB/T 3875-2006, GB/T 26496-2011 |
|
Precision Bars |
Ø0.5-10 mm, Tolerance ±0.01 mm |
Ultra-precision machining |
IEC 60730-1 (filaments) |
Key points for selection:
Operating Temperature: >1500°C requires pure tungsten or W-Mo/W-Re alloys; <800°C permits W-Cu alloys
Load & Impact: High-impact environments prioritize alloyed versions for enhanced toughness
Electrical/Thermal Conductivity: W-Cu or W-Ag alloys for high conductivity requirements
Dimensional Accuracy: Precision instruments require ground or turned surfaces with appropriate tolerance standards
Procurement & Quality Control
Purity Verification: XRF, ICP-AES methods ensure W ≥99.90%
Mechanical Properties Testing: Laboratory testing of hardness (HV), tensile strength, elastic modulus
Surface Quality Inspection: Crack, scratch, and oxide layer examination per GB/T surface finish standards
Supplier Qualification: Preference for ISO 9001, ISO 14001 certified tungsten manufacturers providing material certificates (MTC) and batch traceability
FAQ:
Do you provide samples?
A: Yes, we offer complimentary samples with shipping arranged by the customer. We recommend testing samples or placing trial orders before larger purchases.
Q: How competitive are your prices?
A: Our pricing reflects exceptional value when considering the premium quality and comprehensive service we provide.
Q: What is your quotation turnaround time?
A: Typically 24 hours after inquiry receipt. Urgent requests receive priority handling upon notification.
Q: How do I request custom products?
A: Please share your drawings, images, or samples. We will confirm specifications and promptly initiate production.
Contact:
About STRX Titanium – Why Choose Us?
Premium Materials：We select premium raw materials to ensure quality control from the source.
Rigorous Quality Inspection：Strict quality inspection standards are implemented to ensure 100% compliance with customer requirements.
Customized Solutions：We understand that each industry has unique needs. Our team works closely with clients to tailor products based on specific requirements. We customize all titanium products (color/size, etc.) according to customer drawings or ideas.
Fast Delivery：Advanced production management ensures efficient and prompt delivery from production to shipment.
Expert Support：Gain insights from our dedicated expert team, who provide professional advice and practical assistance. STRX Titanium helps you identify and select the best solutions tailored to your business needs, ensuring optimal results and satisfaction.
STRX Titanium has earned consistent praise from clients for high-quality products and competitive pricing. With strict quality control and professional technical support, we look forward to cooperating with you!
In Summary,STRX Titanium is a leading manufacturer and supplier of titanium products in China. We maintain strong technical partnerships with major domestic and international equipment manufacturers and uphold rigorous quality standards to meet client demands.
If you are looking for a reliable titanium product supplier, please contact us immediately to learn more about our products and services.
Email: info@strx-titanium.com
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